E.A.C.H. Generators (3)
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All American Electric and Cummins installed 3-1,000 KW generators (rated at 6,000 feet above sea level) as the engine of the back-up system. They are interconnected to align output voltage. The first generator to get up to output standards grabs the common bus, the other two align with the first and join the bus. This allows for 1 million watts to be available within 7.5 seconds, and a total of 3 million watts at 10 seconds.
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E.A.C.H. Emergency Paralleling Switchgear
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Custom designed and built for E.A.C.H. and installed by All American Electric, this E.P.S. boasts redundant CPU's, bus optimazitation, load shedding, remote testing and initiation, fused disconnects feeding 5 Automatic Transfer Switches and 2 Fire Pump Controller cabinets. The E.P.S. also controls daytank levels and fuel pump operations, louver banks for air entry and exit of the generator building, and even reports to the hospital builing management system in the event of a problem.
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ATS Fire Pump Controllers
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The two fire pump controllers are a semi-redundant system that automatically senses a drop in water pressure and will self activate to regain water pressure. If the first pump cannot supply enough pressure, the second pump will automatically activate to double it's capacity. These controllers will alert the fire alarm system and the building automation system, and in the event of the loss of power, will also start the generators to feed themselves power.
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Control Piping from E.P.S.
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Control piping installed by All American Electric, from the Emergency Paralleling Switchgear to the generators, daytanks, and fuel systems.
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ATS F Electrical Piping
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All American Electric installed several different Automatic Transfer Switches giving different differing priority levels to each, such as, life safety, critical power, equipment power, and critical equipment power. All of this work was performed in a fully functioning hospital, with extreme care give to continuity of electrical service and infection control.
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MI (Magnesium Chloride) Cable
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Look closely. The copper lines in the picture above are actually electrical conductors. These 4/0 solid copper cables are insulated with Magnesium Chloride and covered with a solid copper jacket. This mineral insulation is rated with a 2 hour fire rating. These were installed from the generator building, to the hospital, across the hospital, to the fire pumps. In this existing hospital, these were the only practical solution to gain the fire rating without severe disruption to hospital operations.
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